Pain Modulation in the Amygdala
Author Information
Author(s): Carrasquillo Yarimar, Gereau IV Robert W
Primary Institution: Washington University School of Medicine
Hypothesis
Modulation of pain by ERK signaling in the CeA is functionally lateralized.
Conclusion
The study demonstrates that pain modulation by ERK signaling in the amygdala is primarily associated with the right hemisphere.
Supporting Evidence
- ERK activation in the CeA is necessary for inflammation-induced peripheral hypersensitivity.
- Blockade of ERK activation in the right CeA decreases hypersensitivity regardless of the side of inflammation.
- The study provides evidence for hemispheric lateralization in pain processing.
Takeaway
The right side of the brain helps control how we feel pain, and blocking a specific signal there can reduce pain sensitivity.
Methodology
Mice were infused with a MEK inhibitor in the amygdala to block ERK activation and tested for pain sensitivity after inflammation.
Limitations
The study primarily focuses on inflammatory pain and may not generalize to other types of pain.
Participant Demographics
Male Swiss-Webster mice, 40–45 g.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website